Has anyone figured out how to automatically log user in after creating them using the Auth0 Management API?
During the onboarding process of our product, I create an user using Auth0 Management API (https://auth0.com/docs/api/management/v2#!/Users/post_users) and then I would like to automatically log them in so they could start using our product without the friction of doing the login process again. But how to do this?
After the user creation, Iād somehow need to generate a jwt access token for that user but I canāt seem to find the right Auth0 API calls to do this. Could someone point me to the right direction?
It seems this has been asked already in the past in these posts:
Sorry for being inexact here @markd Iāll try to elaborate a bit.
We have two uses cases:
A new user comes to the site and signs up. During the sign up, we create a user profile in our system and Auth0. When user completes the sign up (=== onboarding), we want automatically log the user in. So they could start using the site straight away without doing anything else.
existing user who wants login. This is a really simple case and weāre actually using Passwordless for this
The use case 1) is the one I havenāt been able to figure out. During the sign up, we create the Auth0 user via Auth0 Management API (https://auth0.com/docs/api/management/v2#!/Users/post_users) but the end-point doesnāt seem to have any options for getting an access token for the freshly created user. So Iām looking for help with this: how do I automatically log that freshly created user in using Auth0 API (so that Iād get JWT access token to be used with our authenticated API)?
No worries, and thanks for the clarification! Iām assuming you are using your own login / signup page? I know Universal Login will automatically log a user in after registration unless explicitly disabled. There does seem to be a āsignup and loginā option in Auth0.js as well, though Iām not super familiar with it:
I am also looking for a solution for a similar usecase.
In my case I am doing a custom signup in the app through /dbconnections/signup endpoint and I find no way of logging in the user after successfully signing up.
Is there a way to do so or am I forced to redirect the user to the login flow?
Since you sign up the user via API, you have the password at that point, right (which you donāt need to persist anywhere, just keep it until the callback of the signup)? Canāt you then just use the https://auth0.com/docs/api/authentication#get-token > Resource Owner Password grant?
I was able to get an access_token and id_token using what you mentioned, but I canāt figure out how to trigger the auto-login using those parameters? Would I send them to the /authorize URL somehow?
Not sure what you understand under āauto-loginā or āloginā in general. If you have an access token (and ID token), then thatās an authenticated user at that point, nothing more to do. No more login action to do at that point.
Let me clear that: I am working with Single Page Application as described in your tutorial.
The point is what to do with the token. I have to tell the auth0-spa-js - āHey, we omitted standard process of sign-in, this is the token you should use for nowā
Something like this.auth.useThisToke(token)
I can store this token in memory, modify your Interceptor and inject token into http header from memory. This will work. But AuthGuard will not recognize this token:
Any updates on this? Iām in the same situation as luke1988 where I can generate the access_token for our user after creating their account, but Iām unsure how to provide the access_token/refresh_token to the Auth0 React library
We want to use an implicit signup to automatically create an account and login the user if they used an email address for the first time. Then if they try to signup with an email that was already used, theyāll have to use the passwordless flow to validate their email using a code.
@mathiasconradt how would you do this when you created a user for the passwordless connection, since there are no passwords involved here? I need to create a passwordless user using the management API at first and then allow them to login on another device using the passwordless code widget.
for this requirement, I think you can use the Authentication API to generate a OTP then for a particular user.
We want to use an implicit signup to automatically create an account and login the user if they used an email address for the first time.
Can you explain the use case and flow for this a bit more? What triggers the implicit signup in the first place. Is it you/your backend or the user himself doing something on the website? When you say āif they used an email address for the first timeā -> would that be a login or signup attempt by the user? Using the Auth0 Login widget (Lock.js) or something custom from your side?
@mathiasconradt Unfortunately, using the Passwordless Authentication API doesnāt make sense, as it would send the OTP code to the userās email rather than return it to our backend API creating the user. The entire idea here is that the we create an account and login the user automatically without the user having to do anything.
The implicit signup is implicit and not explicit, i.e. the user is not explicitly signing up. It is triggered by them using our platform, in this case writing a comment and leaving their email address in an input field. When this happens, and the email address has never been used before, our backend will create an account for them and log them in in the background, without them having to do anything.
An Auth0 widget or anything would not help here because they require explicit user interaction. Weād only show the passwordless login widget if our API then returns that the email is NOT unique and therefore the user would have to go through the Passwordless OTP flow.
When this happens, and the email address has never been used before, our backend will create an account for them and log them in in the background
How do you protect against spam? Anybody can just use any email address, the email address isnāt verified at this point, if I see it correctly. Also, unless thereās bot protection in place, somebody could create a few thousand comments/accounts this way.
We want to use an implicit signup to automatically create an account and login the user if they used an email address for the first time. Then if they try to signup with an email that was already used, theyāll have to use the passwordless flow to validate their email using a code.
This way a malicious user can lock out other users by using their email address to create comments, isnāt it? Or at least could post one āweirdā comment that wasnāt actually posted by the actual email account owner.
(Asking because weāve seen this as a problem a lot in the past. Legitimate users not being able to register because their email address is already in use - though never verified).
The entire idea here is that the we create an account and login the user automatically without the user having to do anything.
Ok, then (why) wouldnāt the approach I mentioned above work? (You can use it in combination with a Passwordless Account & Account Linking)
@mathiasconradt While I appreciate the feedback, Iām not here to debate our companyās UX and product decisions on these forums. Iām just trying to figure out how to do this (not why). You did not debate this for the database connection above, so why do so for a passwordless connection?
Details (outside scope of this discussion)
We wonāt have issues with malicious users locking out others, because as mentioned before, when the same email address is used again, a user can prove their identity by going through the passwordless OTP flow in this case. All other devices will then be logged out.
We wonāt have issues with SPAM because weāre not triggering any emails and all our comments are sandboxed within an individual conversation, which is only known to a few people behind a secret URL, and this is way outside the scope of this discussion.
The approach you mentioned will not work because the Management API V2 does not allow setting a password for users with the āemailā (passwordless) connection. Itāll return a bad request HTTP error of "password" is not allowed whenever you try to do so.